Wheel-plow.



3. F. HUBLER.

lWEEL PLOW.

APPLICATION FILED MAR.7,1912.

gamma Aug. 25, mm

6 SHEETS-'SHEET l.

wnNEssEs NVENTOR 612201 ZL/ulyer Bv 7i;

ATTORNEYS 3.- F. HUBLER.

53 n 1 I l W ITN ESSES IN V EN TOR ATTORN EYS,

J.' F. RUBBERi WHEEL PLOW.

APPLICATION FILED MAR.7,1912.

Patented Aug. 25, 1914;

SHEET 3.

WAN..

6 SHEETS- ATTRN EVS.

J. I'. HUBLER.

WHEEL PLOW.

APYLIGATNN FILED MAR.7,1912.

Patented Aug. 25, 1914 6 SHEETS-SHEET 4.

WSTNESSES INVENTOR ATTORNEYS.

J. F. HUBL-ER. WHEEL PLOW. APPLIGATION rum MM. 7, 1912.

@8,579 Patented Aug. 25, wm

6 SHEETS-*SHEET 5.

J. HUBLER.

WHEEL PLOW. QATXDN FILED MAR.

APPLE Patented Aug.25,1914.

G SHEETS-SHEET 6.

EHVENJOR @faim Humm .Fitlihl JOHN F. HUBLEB, F NEAR FORT INA.

WHEEL-mow.

ySlmeiiiceton of Letters Patent.

Patented Ang.. 25, gide..

Application ltd Kirch 7, 1913. Serial No. 682,083.

To all whom t may acmcem:

Be it known that I, JOHN F. HUBLEn, a citizen of the United States, residing near Fort Wayne, in the county of Allen and 'State of indiana, have invented fnew and useful Improvements in l/Vheel-Plows, of which the following is a speoieation.

My invention relates to wheel plows in general, and particularly to wheel plows adapted to be self propelled in which provision is made for raising and.' lowering the plow relatively to vthe supporting wheels.

The objects of my invention are the profvision in a plow of the said type, of novel 1,5 means for supporting the plow; novel means for raising and lowering the plow; novel means for connecting the wheels to theframe; novel means forshifting the Wheels back and forth relatively to lthe frame end other objects hereinafter set forth.

With the foregoing end other useful objects in view my invention consists in the matters hereinafter set forth end claimed- 1n the accompanying drawvings,'ligu1e l is a side elevational view of a self propelled wheeled-plow having my inventions embodied therein; FigjQ, a lan view of theI same, the motive power dev-ice being omitted; Fig. 3,3. bottom plan view of the rear portion of the device; Fig. 4, a side elevational view-of the steering caster-wheel and connections partlyv in .'seetion; Fig. 5, a side elevational View ofthe. front wheel shifting rack and operatively connected nieol'ianism;

Fig. 6, .e sid@ elevational view of the plow supporting toggle; Fig. f?, a plan viewv of the structure shownn Fig. .6; Fig. 8, front elevati-on of the forward connection of the plow beam; Fig. l, a side view of thestruc- 40 ture'in F ig. 8; Fig. l0, e side elevational view of the shifting spindle and connections for theright driving wheelig. il, a plan view ofthe structure of 1 0; Fig. 12, a. side elemtionel lview of the leftf driving wheel supporting spindle and connections fand shiftlng-.levem Fig. 135e plan view of the structure :af-Eig l2l and Fig. 14:. a ver-u tical seotionnl'viewloif oneof the driving wheels illustrating the, manner of its support 5o on the frame; ,f

Reiereingto the drawings, l is the mainfffeme-O tlejdevice, referably eonstruoted of metal. 'Ate Seite le point on the front end member l of thefniain frame is movably seeured e'plete 2, (.Tlgs. 8, 9) Abyvloolts 3 and e.. Alot 5. .in the-plete 2 permits of ver nuts on both bolts being tightened after the adjustment is made. 'Ewo ings 6 project from the outer face of plete 2 :end between the lugs is pivotelly supported, by holt 7, a bifnrcated hanger 8. -Tlre hifuareated ends of hanger 8@ are provided with slots il, in which slots. ere two setsl of bolts l0; Whieh areseoured in any adjusted position within: the y"slots, by suitable nuits 10P on the Between the npperand lower pairs of said bolts .l0 is engaged the forward end of the low beam 11 which extends within. fuleated end of henger d. By loose- .nc nuts L02* on bolts l() tire beam 1l tney he -flreleasedi and adjusted longitndinally ,and vertically relatively to hanger 8.. By adjusting plate 2 on holt 3. it is evident that the beam may be tiltedlaterally.

The rear of the beam 'l'ligs l., il. C, 7 to which is seenredthe plow body l2', is seeured, by 4bolt 1%, to e bifereated bracket 514: which extends rearwardly from beam il. Bracket le is bolted.I by boit i5; to s. freine 16, the ripper portion of which is bifuroate The upper edges of the bifurcations of frame l@ are ree at 17 'to oommodete shaft 18. Spacing; members 19 are insertedbetween the 'a e er ends of the bifurcated freine 116 and the holte 20 ser-.ure the said ends andl spaeing; members,together. bar 2l is znovably mounted on bolt 15 and projects rearwardly therefrom and ries a laterally projecting threaded pin 'i which projects through eniteieie slot formed in a plate which plate projects rearwardly from frame n-n T/, s to secure bar 21 to plete Q4 in any adjuster.

" .bly ed suitable e ting 3E?. is the other by set screw to shaft point; @ne ered of suit il :secured toA the free eri-rl, of end of the spring being; conn oint. il adinstinzz: @eri `.herellv P V .on shaft f1.8 the tension on spring 33 they be position thereon. lug projects up.4

34 which carried by frame lo et suitable j.

t tical adjustment of the plate on bolt S, the

yeo

. at 44 to frame 1.

vof the shaft is secured a tion.

varied as desired, and by erstem sion 21 on plate 24 and by adjusting screw 28 the tensionv on spring' 27 may be varied at will. Frame 16 and /arm 31 forma knuckle joint between the plow and shaft 18. When shaft 18 isrdtatedto the right, Fig. 6, by the means hereafter' described, arm 31 will be rocked rearwardly and frame 16, together with ,the beam andA plow' connected thereto, willbe permitted to descend. Arm 32 necessarily moves coincidently with arm 31 and maintains tension on spring 33 at all times. The purpose of spring 33 is to provide a resilient connection @between shaft 18 and frame liin orderv that, when'fthe low is cutting a furrow, the jar to the knuc le and lother connecting parte by which the low is supported, is 'more or less absorbed Iby the spring, thereby prolonging thelife of the knuckle. Spring 2'7, of course, opposes the downward movement. of the plow and knuckle jointand assistsfin elevating the plow oli the groundg'lt .also provides an elastic support for the knuckle on frame 1. To elevate 'the plow, shaft 18 is rotated in the opposite direction whereby arm 31, in its upward movement, raises frame 16 and the plow from the ground.

Shaft 18 is revolubly carried by suitablev bearings on frame 1. To one end crank 35 (Fig. 12), the crank 'bein pivotally connected to a link 36 which is pivotally connected to a lever 3?. ll'ievcr 3'( is pivoted to a bracket 38 'which is secured to frame 1 and is provided with a suitable rack 39 for engagement b a latch carried by rod 40 by which lever 3' is .held in any elevated posi- By elevating-lever 37 the desireddistance, it is apparent that shaft 18 will be rotated forwardly (Fig. 12), or to the right in, Fig. 6, thereby lowering the plow th'e desired amount. This movement of the plow beam is accommodated at the forward end of the beam by pivoted hanger 8.- A link 41 is alsorpivotfally connected at one end to lcver"37 andnat-its other end it is pivot- ,ally connected to a collar 42, which collar is slidably mounted on one arm 43 of a bell `Crank 43, which crank is pivotally mounted Arm 43 carries an adjusting screw 45 which is also in threaded engagement with collar 42 and, by the rotation of which, collar 42 may be moved up and' down on arm'43 to adjust the throw of crank 43 when lever 37 is operated. The free extremity oit the other arm 43 ot' the hell crank is pivotally connected to one cud of link 4G and thc other end of said link is pivotally connected to a lug 47, which is mounted on a swinging bracket 48.' A scc! ond lug 49 on said bracket is pivot/ally connected to one end of a suitable spring 50, the other' end ot the spring being connected to an, adjusting screw 51 carried by an arm 52 grosera which is secured to frame 1. Bracket 48 is pivotall mounted on boss' 53 which projects outwar ly from casting 53, is secured to frame l. The the casting isl rounded and provided with a suite le rojections commonly in use on traction` rving wheels. Wheel 59 also carries a cog wheel or ring 59 which is adapt- ;ed to mesh with cog Wheel 58. Bracket 48, being'pivotallymountedton boss 53, forms a slightly rearwardly,thereby drawing wheel 59 slightly rearwardly, or frame 1 andthe plow move forwardly a short distance while wheel 59 remains stationary for the moment.l -This ,shifting ofthe frame on the `wheelpermitsthe point of the plow totake hold of thefground-that'is the. forward wheel 59 forces the point ofthe plo'w into the ground the desired depth as controlled by lever 37.

At the upper end of bracket 48 is a projection 48a having an opening 48,b therein. A

outer'face of bracket 48 and serves to retain said bracket on the boss. Opening 48b corresponds in size to lug 53 and byA swinging bracket 48 rearwardly' luntil said opening and said lug are in register, the bracketjnay be removed from the boss. lt is, of course, necessary that wheel 59 and gear wheel 58 and sprocket 57 shall first be removed before lthe bracket may bc'removed from or assembled on boss 53. l

The driving wheel G0 is mounted on the opposite side of trame 1in asomewhatsimilar manner to wheel 59, but rearwardly of the latter. It is .revolubly mounted on spindle 61 (Fig. 10) which is secured to bracket or supportl 62. Bracket 62, similarly to bracket 48, is movably mounted on boss 63 which is formed on casting 64, which casting' is sccmcd to the side ot frame 1. Casting 64 is provided with a rounded lower edge and has a slot 65 therein' similarly .to casting 53a and in said slot is op- (lfg. 1a). The 'upper end of bracket 62 is provided with an openin 62 (Fig. 10) similar to opening' 48 in racket 48 and a lubly mounted*v onel of the drive wheels 59,-- .'theeripheryv of which is provided withmovement of' frame 1 independently ofv lug 53h secured on boss 53 is adjacent the vwhich casting lower ed e of j' 7o. channel 54, in which channel a tongue onfthe vl x` inner surface of bracket 48 is'slidable to- 7 5 indle55 is revoswinging vsupport for` spindle 56. Byv 'elevating lever 37, the links y41 and 46 and bell crank 43 are'actuated lto swing bracket 48 erative n tongue 66 carried by bracket 62l 4 inname corresponding lug 67 on' boss 63 similar to lug 581 on boss 53 serves to retain bracket 62 on boss 63. A spindle 68 is secured to boss 63, and mounted on said spindle is a sprocket wheel' 69 and gear wheel 70. Gear wheel 70 meshes with gear wheel or ring 71 ondriving wheel 60.

dit the lower edge of bracket 62 is a lng 72 to-which is pivoted one end of a link 73 (Figs. 10., 11), the other end of the link being pivoted between a bar'74c and bracket 7 5 carried by said bar. A link 76 is pivoted at one end to the fgrward end of bar 74, the other end of which link 76 is pivoted to Tframe 1. A.4 second lug 77 is provided on bracket 62, to which'is pivotally connected `one end of a suitable spring 78, the other end of the sprin being connected to adjne'tng screw 797W Kich is carried by bracket 80, which' bracket is secured to the forward end of frame 1. connected to the rear end of bar 74 and is agjustably mounted on shaft 18, by set screw N ear the forward end of bar 74 and pro-A jecting inwardly therefrom is a bracket 83 to which is connected the forward end of an adjustable connection 84 which preferably ,consiste of two rods. 84. 84 which are setogether in any .longitudinal adjustin split `block 85 by bolt 86. The rear end of 1rod 84th is connected to the forward end. lof a 87 (Figs. 3 5). Rack 87 is slidabiy supported in two lugs 88 which de- {pend from plate 89, which plate is provided Iwith an upwardly extending flange 90 which is secured to the rear end member 1b of frame 1. Suspended beneath plate` 89, by bolt 91, is a gear wheel 92, the teeth of which are in mesh with the teeth of rack 87. Be tween gear wheel 92 and plate 89 is a disk Qbaving a slot 94. therein in which is en gagged a bolt 95 which also passes through gear wheel 92, and by which bolt the disk and gear wheel are secured together. A projection 95 is provided on the edge of disk 93 which extends a suitable distance beyond l the periphery of 'gear wheel 92 and is adapted when the gear wheel and disk are rotated forwardly, as hereafter explained, to make Contact with the forward extremity of a 'lever 96, and rock the lever on its ivot. Lcver 96 is pivotally mounted by olt 97 to thedower side of plate 89, and its rear extremity is providedwith two series of holes 98. By'adjusting disk 98 relatively to gear Wheel 92, which is accomplished by loosening the nut on bolt 95 and shifting disk 93 lcircumferentially, projection 95 may be .brought closer to or removed farther from the forward end of lever 96 and thereby fix the desired throw of projection 95 to cause it to actuate lever 96 at the proper time. The ends of two rods 99 and 100 may/be engag'edin any two openings of the two seriesVv A crank 81 is pivotallyY of openings 98. The rods extend outwardly in opposite directions. The other extremity of rod 99 is slidably engaged in an arm 101 which is part of a yoke 102. A collar 99'* on rod 99 1s adapted to engage the inner side of arm 101 on the outward movement of the rod. Yoke 102 encireles and is pivotally connected to a clutchmember 103 which is slidably mounted on one `end of driving shaft 104 and is adapted to co crate with another clutch member 103 whic is secured to shaft 104, to cause said shaft to drive a .sprocket wheel 105 which is mounted on clutch member 103. A lsprocket chain 106 operatively connects said sprocket wheel with sprocket wheel 57 at the forward end of frame 1. Yoke 102 is also provided with a rearwardly extendin arm 102a which is pivotally connected by ink 107 to a bracket 108,` which bracket, together with bracket 109 which is secured to end member 1" of frame 1, forms a bearin for shaft 104C'. Similarly the outer end of rod 100 is slidably enga ed in an arm forming part of yoke 110, t e rod 'having a collar 100" which engages the innervsid'e of the yoke on the outward thrust of the rod. Yoke 110 is pivotally connected to a clutch member' 111 slidably mounted on the other extremity/,of shaft 104, said clutch member carrying a sprocket wheel 112 whichjis operatively connected by sprocket ch'ain 113 to sprocket wheel 69 at the forward end of that side of frame l. The clutch is adapted to coperate with another clutch member 111 which is secured to shaft 104, by which the shaft may rdtate sprocket wheel 112. Arm 114: on yoke 110 is pivotally connected by link 115 to bracket 116 which, with bracket 117, formsl aV second bearing for shaft 104;.

A bar 118 is connected to both brackets 108 and 116 and on its upper surface it is provided with a suitable number of notches 119 (Fig. 2), in any one of which notches -f a bar 120 'may be` engaged. Bar 120 may have a suitableI weight 121 attached at its rear end. The forward end' of the bar is connected to a boss 122 which projects laterally from one face of a friction wheel 128. Friction wheel 12,3 is splined on shaft 104 and it is adapted vto frictionally engage a disk 124 which is secured to the rear end of shaft 125, which shaft is revolubly and slidably carried by bea-rin s 126 which are mounted on sub-frame 1, t. e said sub-.frame being mounted on mainframe 1. A' bevel gear 127, having a clutch member 128 pro-A gecting from its forward face, is loosely mounted on shaftand a cooperating clutch member 129 is secured to shaft 126 and is at all times in contact with member 128, there being suiieient longitudinal play between the two members to permit of a rear movement of member 129and shaft 125 to force disk 127.11m) Contact with wheel 123.

end of lever 130 forwardly forces clutch member 129, shaft 125 and disk 124- rearwardly to cause the disk to ineke Contact with friction wh-eel'l23', thereby cdusing the shaft 104 to rotate. l/Vhen he releases the lever spring 131 immediately retreets the lever, and the shaft and therefore disk 1211 and wheel 123 :Life disconnected.

' Avbevel pinion 132 is secured to one end of shaft 133, which shaft. is revolubly mounted in bearing 133 and ie provided with :i pulley 134:. Pulley 1311 is Connected by belt 135 to e suitable driving mechanism 13S, which may be e gnsolene engine or any other suitable type of motive power.

At :i suitable or eom'enient point relen tively to lever 37 l provide n. steering wheel 137, which is seein-ed to e'post 137e., which is revolubly Supported by platform 30 and projects beneath said platform. At the lower end et poet 13T eeeured fz pinion 138 which is in mesh with e gear wheel 139, which geur wheel is seenred to the 'upper end oit' spindle 1/10 ot easter wheel 141. The upper end of spindle 140 beers in e enp 142 which is formed in platform 30, :ind a suitable vo "i1-:nl hearing 142 supporte the spindle. mad Secured to end'nn-sniber 1b ol. frmne 1. in :unnrlnr thing@ 145i projects laterally from the' upper poi-tion ot the steek 14 l ol" the mieter and :t portion oit the pc riphernl odge ol the lnnge is provided with ,teeth to torm n partiel {.e'er wheel. This wheel meshes v. ii h :t Segment gen1' 115 whioh is formed on :i t uniting! 140. (lasting 'tl-ti is pivotally moei-t l by holt 147 to e, flange 1418 en beni-ing l To `one 'tor'.verdly extendinf.;` :arm l-l) ot 'rusting ifi-ti is con neeted one end ot' e rml 153) which extends outwardly :ind the outer extremity of which is connected to nrln 10i oi" yoke )02, it ooh lm' 15,0 on the rod reigning; the inner eide of :.u'in 101ml the onli thrust el" the rod. A. similar rod 151 is :deo connected :it its inner end to arm 'llfl :md at its outer end to yoke 110, :i coller 151 on the rod ongein ing the inner eide of Athe yoke on. the ontv ward thrust oi' the roti. 'ifo the r ai' arm el Y east-ing,r 140 :iro :,:onneeted tht .iner ende ot two Springe 157s and 15e, which are sul stentielly equal iiftetiengtl The outer end Of Spring-153 is connected to yoke 102 end the outer end of Spring 15e is connected toone end ofl e rod `i553. the other end ot the' rod being cnnneeted to yoke 110.

perent that the rotation ot 'wheel' 113i" to to turnv to the right; arm 149 of casting 1411.0 turns to the right, thereby causing will turn tie the left. `The movement of casting if posed hy 15e, wlii ne er the other of springs 153, epi-ings tend to maintain connec- -end between. members 111 and 111,r

Spro \t chain 106 passes over en idler spreek e 156 which is :idjustnbly secured to freine 1, and e, similar4 idler sprocket wheel 15T emilarly secured to the opposite side 0 1 treme 1 over which passes chain 113. These i "lle sprocket, wheels take up the slack in the respective chains, consequently there is no slippage of the chains or loss of power when relative movementtukes place between the traction wheels and trame 1.

in operation the operator adjusts wheel 123 on ehn-tt 104 relatively to disk 124: so as to cmise the shnft to be driven et the deoiredspeed. Coller l2 is else adjusted on undeood, of course, that easter Wheel 141 237' forwardly the desired distance. This movenixmt et the lever muses shaft 18 to` roiorwnrdgy to eziuse erm 31 to descend,

ground. The 'forwfard movement of the lever cnrriesli-nnie 1 and the plow slightly and since erenh 31 on slm'tt, 18 moves ren-rwfsrdlj'- With the forward rotation of the shett', end lit t 'Iii to the swinging bracket B9. which mtrriee; wheel (it). 'iho forward movement met: rotates Segment gear Q2 and disk,- 93

thereof to iheright., wheeby rod the right. (Fig. 2) will ceusefeesterv 141` `rod- 151. to disconnect clutch members f 1 11' .andk

transmitted to wheel 60 and the machinel :in either direction is always opztion between clutch members 103 and 10331l bell crunk i3 for the desired throw of crank.` 'fl-3 :intl thereby predeterxmnes the relative is; now met tor streightehead running'. To.. lower the plow 12 the operette'l pushes level" whereby tht;y plow also doseends to the forward reliitively to wheels 59, 110. Since the whe-ele ere pivofellv mountcdon the re'me,r

-. crank being conneeted bybar l' oi* 'linmel torres miek tl? renrwmdly,'which end the connected chains 106, 113 therefore drive the traction wheels 59, G0, 1t. beingt' rweidly. Vonscquently projection 95?fdnijhg. .firmeets the forward end of lever 96 'felices yolie H0 outwardly to disconnect I .lever 136. sc that spring 154 will restore the leverand vclutch lll tto their 'normal' po's'i# tion. While the clutchis out traction vwhheel (S idle, but as soon as pring 154; restores the parts the wheel isv again driven, the rack and disk remaining in the `nositions to which they have been moved. TWhile powerI is being applied to wheel 59 only the point of the plow is V"drawn 'down in'to the ground and when the power 4is again transmitted to both wheels the: machine proceeds to plow the furrow, i

To elevate' the 'plow out "el the gifound the operatorlowers leve'rf' thereby'rockin'g shaft the plow. The movement olif-the lever' and and thereby disconnecting the 'power from wheel v59; Power being thus applied to wheel 60 only the plow is easily'hraise'df trom the ground. The purpose oidisconnecting one oi the traction wheelswhile lifting or lower-` ing the plow is tofacilitatejthe 'movementp of the plow. It insures the ayplicationof' the full power olf the-engine ttl the :other wheel by which'the yblow point is drawn down linto the ground. The 'I purpose and function of 'the adjustable connection between'link 4l and bell crank 43 is that by adjustingtbecollar lonrthe crank the relative movement between'. frame l and wheel 59 maybe? varied'a't will. In breakinfrA or finishing land it is desirable thatithe' frame shall shift the same amount relatively to both traction wheels. And this movement is accomplished by the adjustment of collar 52. ln ordinary plowing therelative movement between the main frame and wheel 59 should be and is' more than that between therame and wheel 60 since wheel 59, in the ease Acia left handed plow, is always in the furrow. lf thev plow point is dulll the adjustment of collar 52 on crank 43 will insure the entrance of the point into the ground by increasing the relative` movement of the frame and wheel 59.

lt is now apparent that by the use of one operating lever 37 I am able not only to rai se and lower the plow, but also control' the depth of furrow which the plow shall out. find also by the means connected to the lever l am able to provide relative movement bei tween the frame and the traction wheels and :Suoporaageehaecuo 'lo uit sila nay ibe tsed equally well".4 Furthermore,-

mre than Aone plow any be 'supported 'on sha'rt 18 'similarly 'to plowl I2, 'and-'thereby enable the device to plow a plurality 'of ui'-, OWS @It the sl'etini'e. f'

llllahy modifications of str'ture and arrangement of 'p'arts are possible, hence I do notwish to be limited to the prcise stru@ ture and 'arrangement of partey described tbve'. Q I What I claim ist y 1. In a'vvheled plow a main frame, two

frame, 'adjustable mehs obnnectnggthe lever'iiil 'dneof the traction wheels; yilhaif't rvolibly mounted on the frame, mails'co'n# 1S rearwardly and arm Blupwardly, which necting the'lv'r 'and shalt 'to cus'etelatn arm with the assistance of spring 27 elevates certamente when' the former is actuated, means-"connecting ,thefsh'aft 'andathe other y the-'ijt's beingwso arranged that the operation of the lever totn'te's-,the'fshft to raise'. el' -lwezl'ltlie relatively to the traction wheels* 2'. In a wheeled plow a main frame, two

traction wheels 'pivotally supported on the one of the' traction wheels, 'means operatvel'y' connecting the shaft and theother traction' wheel," means operatively connected tol both traction .wheels for, propelling the same andy 'means connected to the latter means and to the second named means for automatically cutting in and out the transmissionA o' power. toone of the traction wheels, the parts being so arranged that the actuation of the lever shifts the frame relatively to the traction Wheels and automatically disconnects one vof the traction wheels from the propelling means.

iig-ln a wheeled plow a main i'a'me, a

'lever pivotally secured to the frame, a shaft revolubly mounted on the frameand operatively connected to the lever, two traction wheels pivotally mounted on the frame, mechanism on the frame and connected to the wheels to rotate the same, means connecting the lever to vone of the traction wheels, means connectingthe shaft and the other traction wheel, a movable rack connected to the latter means, a segment'gear in mesh with the rack and having an adjustable. disk thereon, a lever adapted to be actuated by the disk and connected to the traction' wheel driving` adapted to disconnect said mechanism from onc\ of the traction wheels, theparts being so arranged that hy actuating the lever forwardlv the shaft is caused to rotate toshift the frame relatively to the tacti'o Wheels mechanism and iso whereby the rack is moved rearwardly to rotate'the segment gear and disk and actuate l thc-second lever fon-the purposes described.

4f In a; wheeled plow', a freine, two traic-` tion wheels pivotally supported on `the frame, a power' mechanism tojrotete the wheels,a :lever having a, connection tothe power mechanism for connecting ory discon meeting the mechanism to or from` either traction wheel, a revolubly mounted disk to rock the lever, a reciproceting'rack to' roltete the disk, meansfpivotclly connected to one of thedrivinp;` wheelsupports' and to 'the rack,u,and means operatively connected to the letter menne to reciprocate the same and the rack whereby the lever` is. actuated to connect or disconnectlthe .fpoweninechanism -toor fromeither treetion Wheel.

e: ineene-gconnecting the lever and one of 'the traction wheels, a shaft revolubly mounted onvtheframe, means connecting the lever; and' shaft to cause the latter to rotate when the .former is actuated, means connecting the shaft and the other traction wheel for providing relative move-Y ment between 'the main frame lBind the pivotel point of seid wheel and e plow having nl movable supporting connection to the shaft, said connectioncomprisin a bracket secured to theplow and a mem er adjustably secured to the shaft and adapted to articulate with 'the bracket to raise or` lower vthe plow upon the rotation of the Shaft.

In witness whereof l 'have hereunto signed -my name the presence of two witnesses.

JOHN icigiriennn.` 

